502 Bad Gateway

Hi, I am having troubles getting right responses from API.

I get '502 Bad Gateway' as response when I try to get some of the reports.

It's been couple of months since I started getting some reports using API everyday and I came across this problem for the first time yesterday(2/11).

"<html>
<head><title>502 Bad Gateway</title></head>
<body bgcolor="white">
<center><h1>502 Bad Gateway</h1></center>
<hr><center>nginx</center>
</body>
</html>
"

Here is the request. （ {XXX} is for security reasons. ）

https://backstage.taboola.com/backstage/api/1.0/{campaign_id}/reports/top-campaign-content/dimensions/item_breakdown?start_date=2020-02-04&end_date=2020-02-04&campaign={id}

Could you help me out solve this issue?

Thank you in advance.